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Cyclizations of phenyl substituted alkenyl grignard reagents

โœ Scribed by Herman G. Richey Jr.; Harry S. Veale

Publisher
Elsevier Science
Year
1975
Tongue
French
Weight
235 KB
Volume
16
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Cyclizatlon of unsaturated Grignard reagents (or the reverse reactlon, ring cleavage of strained cyclx Grlgnard reagents) has been studled m a range of systems, 1-12 but the detalled mechanism has yet to be establlshed 13 We earlier reported that cycllzatlon of & 1s retarded ~a.

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Intramolecular cyclization of an allenic
Intramolecular cyclization of an allenic grignard reagent
โœ Herman G. Richey Jr.; Walter C. Kossa Jr. ๐Ÿ“‚ Article ๐Ÿ“… 1969 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 102 KB

A ready intramolecular addition of the Grignard function of the 3,4-pentadien-l-y1 Grignard reagent (2) to an allenic double bond furnished the l-cyclopropylvinyl Grignard reagent (5). \* The structure of this new compound is consistent with its elemental analysis and ir and nmr spectra.